Kenneth S. answered • 04/05/17
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Expert Help in Algebra/Trig/(Pre)calculus to Guarantee Success in 2018
sin t = -21/29. I believe that you want sin 2t.
sin 2t = 2 sin t cos t
Kenneth S.
Use the double angle formula (for sine) that I quoted, with the exact (rationals) that I supplied.
You will get an exact answer. Then convert to decimal and choose the correct one.
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04/05/17
Michael U.
04/05/17